Uses, Benefits and Limitations of Measuring National Income
Learn about this Module One Topic in the CAPE Economics Unit 2 Syllabus.
Edu Level: Unit2
Date: Oct 10 2025 - 2:50 AM
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Uses of National Income Accounting
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To measure the level of economic activity in an economy or country.
- Increase REAL output, indicates improving economic performance in an economy.
- Falling REAL output, indicates a decline in the economic performance in an economy.
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To determine the Standard of Living overtime, i.e. living within a country.
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To compare the Standard of Living of people between & among countries.
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To measure economic growth in a country.
- Economic growth is defined as an increase in real GDP per capita in a country.
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International Agencies such as the IMF (International Monetary Fund) use National Income Statistics to classify countries according to the different levels of development such as developed, developing or under-developed countries.
- The classification can further be used to determine the need for aid and assistance for countries.
Why National Income is NOT Good Measure of Standard of Living
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National Income figures DOES NOT take into account inflation or price changes. A better measure will be REAL GDP.
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The National Income figures DOES NOT take into account population changes. A better measure will be GDP per capita or income per person.
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The National Income figures fails to include substantial earnings made in the "black economy" or "hidden economy".
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The National Income figure DOES NOT tell us about the components of Government Expenditure.
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The National Income figures DOES NOT tell us about how income is distributed in an economy.
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The National Income figures DOES NOT take into account negative externalities, for example: pollution.
Limitations of National Income as a measure of Economic Welfare/Standard of Living
- We tend to believe that a rise in National Income means that we are better off because more goods and services are being produced.
- However, there are some problems that arise in assuming that a country increases its welfare, when it increases National Income.
- These problems are called the limitation of National Income as a measure of economic welfare or standard of living.
- The non-inclusion of the informal sector such as the underground economy and illegal activities.
- National Income is certainly not a perfect measure of the SOL of people bexasue quite often it fails to include substantial earnings made in the "black economy" or "underground economy", for example drugs & prostitution.
- As a result, the National Income figure is UNDER-ESTIMATED.
- Non-payment for "Do-it-yourself" activities or non-marked activities.
- The National Income figure does not include non-marketed activities such as do-it-yourself activities, for example, babysitting, volutary work, housework, etc.
- As a result, the NI figure is UNDER-ESTIMATED.
- The NI figure excludes negative externalities & environmental degredation.
- NI figure does not take into account negative externalities such as: pollution and environmental degredation
- As as result, the NI income figure is OVER-ESTIMATED.
- The NI figure does not take into account the uneven distribution of Income and Wealth.
- A rise in NI may make just a few people better off without helping the majority of the population. In some countries, the middle east which produces oil, the NI per person is very high.
- The National Income figures does not indicate government expenditure pattterns.
- The types of government expenditure affects the SOL of people.
- Expenditure on defence, for example, guns and ammunition, brings NO immediate improvements to SOL whereas expenditure on hospitals does.
- Thus an increase, in defense spending would show up as a large increase in NI but it would be misleading to use this as an improvement in SOL.
- The National Income figure does not take into account the long hours of work.
- The NI figures may have increased because people are working longer hours, experiencing a great deal of fatigue and boredom. Life becomes monotonous and routine and such persons have no time for leisure.
- Despite the increase in NI, people's SOL may NOT have increased.
- Hence, NI is NOT a good measure of SOL.
- The National income figure is a quantitative figure/measure, whereas, SOL is a qualitative measure.
- NI is a quantitative measure since it measures changes in the valur og output but NOT changes in the quality of life. Whereas, SOL is a quantitative measure.
- Thus, it is fundamentally incorrect to use a quantitative measure to determine the SOL of people.